EternaBond 73054811057 AlumiBond MicroSealant Tape 4in x 50ft Roll

The EternaBond AlumiBond is a heavy-duty aluminum-faced peel-and-stick sealant tape engineered for permanent, waterproof repairs on metal roofs, RV and trailer sides, ductwork, drain pans, and more. Combining a rigid 4-mil aluminum backing with EternaBond's proprietary MicroSealant™ adhesive technology, AlumiBond creates an extremely hard, durable surface that forms an airtight and vapor-tight bond to virtually any substrate — no UV protection required.

Unlike conventional repair tapes, AlumiBond's MicroSealant™ formulation uses a 100% solids blend of synthetic resins, thermoplastics, and non-curing, non-butyl rubber with a built-in primer — meaning no separate priming step is needed for most surfaces. The adhesive is protected by a siliconized release liner that peels away cleanly for fast, one-step application.

Key Features:

• Size: 4 inches wide x 50 feet long
• Total thickness: 20 mils (0.51 mm)
• Aluminum backing: 4 mil thick — tough, hard, and paintable to match surrounding surfaces
• Adhesion: Greater than 17 lbs per inch width to unprimed aluminum
• Tensile strength: Greater than 1,000 PSI
• Application temperature: Above -10°F (-23°C); down to -10°F with EternaPrime primer
• Shelf life: Up to 5 years
• Warranty: 15-year limited warranty for roofing applications
• UV stable with excellent resistance to wind, rain erosion, and ultraviolet rays
• Creates an airtight and vapor barrier upon application
• Can be painted to match repaired surface color — no additional UV coating needed
• Seals to itself — can be cut, folded, and wrapped around objects
• Made in the USA

Compatible Substrates:

• Carbon steel, aluminum, galvanized steel, aluminum foil
• Gypsum board, wood, rubber, tar
• Polyethylene, polypropylene, polystyrene, fiberglass
• Brick, concrete, masonry, thermoplastics, single-ply roofing

Common Applications:

• RV and trailer roofs and sidewalls
• Metal buildings and commercial roofing
• Drain pans, drain pipes, and ductwork
• Boats and canoes
• Gravity tanks and troughs
• Surfaces requiring abrasion and corrosion protection

Surface must be clean, dry, and free of dust, dirt, oil, grease, and salt prior to application. Press tape firmly by hand or with a steel roller for maximum conformability and adhesion. When spiral wrapping, allow at least a half-inch overlap to ensure a complete seal.